adrenergic agonist
An agent that selectively binds to and activates adrenergic receptors.
vasodilator agent
A drug used to cause dilation of the blood vessels.
mydriatic agent
Agent that dilates the pupil. Used in eye diseases and to facilitate eye examination. It may be either a sympathomimetic or parasympatholytic. The latter cause cycloplegia or paralysis of accommodation at high doses and may precipitate glaucoma.
bronchodilator agent
An agent that causes an increase in the expansion of a bronchus or bronchial tubes.
alpha-adrenergic agonist
An agent that selectively binds to and activates alpha-adrenergic receptors.
vasoconstrictor agent
Drug used to cause constriction of the blood vessels.
beta-adrenergic agonist
An agent that selectively binds to and activates beta-adrenergic receptors.
sympathomimetic agent
A drug that mimics the effects of stimulating postganglionic adrenergic sympathetic nerves. Included in this class are drugs that directly stimulate adrenergic receptors and drugs that act indirectly by provoking the release of adrenergic transmitters.
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